Kenya KCAA Aircraft Maintenance Engineer Licence (AMEL) Examination

According to the Civil Aviation (Personnel Licensing) Regulations in Kenya, what is the standard validity period of an Aircraft Maintenance Engineer Licence (AMEL)?

• A12 months
• B24 months
• C36 months
• D60 months

To renew a KCAA Aircraft Maintenance Engineer Licence, the holder must demonstrate recent experience by performing comparable work for a minimum of how many months during the 24 months preceding the expiry date?

• A3 months
• B6 months
• C12 months
• D18 months

What is the minimum age requirement for an applicant to be granted an Aircraft Maintenance Engineer Licence (AMEL) by the KCAA?

• A18 years
• B21 years
• C23 years
• D25 years

For an applicant who has successfully completed an approved course of training at a KCAA-approved Training Organisation (ATO), what is the minimum practical experience requirement to obtain a Category B1 or B2 AMEL?

• A1 year
• B2 years
• C3 years
• D4 years

What is the minimum basic practical aircraft maintenance experience required for an applicant who has NOT completed any approved (recognised) training, to obtain a Category B1 or B2 licence?

• A2 years
• B3 years
• C4 years
• D5 years

If an applicant fails a KCAA AMEL written examination paper, how long must they normally wait before they are eligible to resit that paper?

• A7 days
• B14 days
• C30 days
• D90 days

Under KCAA regulations, a Certificate of Release to Service (CRS) must be issued after which of the following maintenance activities?

• AOnly after major overhauls or component rebuilds
• BOnly after structural modifications approved by KCAA
• CAny maintenance task, including inspections, adjustments, or component replacements
• DOnly after scheduled line maintenance A-checks and above

What is the primary purpose of a Certificate of Release to Service (CRS)?

• ATo certify that the aircraft is completely safe for flight under all weather conditions
• BTo certify that the maintenance has been completed satisfactorily in accordance with appr…
• CTo declare that no further maintenance is required for the next 12 calendar months
• DTo authorise pilot license holders to fly the aircraft on commercial operations

Within what maximum timeframe must a KCAA-approved Maintenance Organisation (AMO) report a reportable safety occurrence to the Authority?

• A24 hours
• B48 hours
• C72 hours
• D7 days

Who is primarily responsible for ensuring that all mandatory Airworthiness Directives (ADs) are complied with for a Kenyan-registered aircraft?

• AThe licensed engineer who performs the inspections
• BThe aircraft owner or registered operator
• CThe KCAA airworthiness inspector assigned to the aircraft
• DThe maintenance organisation's quality assurance manager

Under what conditions can a KCAA Category B1 Licensed Aircraft Maintenance Engineer exercise privileges on an avionic system?

• AUnder no circumstances; all avionic work must be certified by a Category B2 engineer
• BOnly for simple tests to verify serviceability and minor troubleshooting not requiring co…
• COnly when the work is limited to minor avionic tasks and simple test procedures outlined…
• DOnly if they have obtained a pilot's licence to fly that specific aircraft type

What is the standard validity period of a Certificate of Airworthiness (C of A) issued for a civil aircraft in Kenya?

• A6 months
• B12 months
• C24 months
• DIndefinite, as long as the aircraft is maintained under an approved maintenance program

Which KCAA regulatory document contains detailed information regarding the basic knowledge syllabus and licensing requirements for aircraft maintenance engineers?

• AThe Aeronautical Information Publication (AIP)
• BThe Civil Aviation Advisory Circulars (CAAC)
• CThe Kenya Aircraft Maintenance Engineers' Licence (KAMEL) Manual
• DThe Flight Operations Manual (FOM)

What is the certification privilege of a Category A Licensed Aircraft Maintenance Engineer under KCAA regulations?

• ATo certify complex structural repairs on any large aircraft
• BTo certify minor scheduled line maintenance and simple defect rectifications within the l…
• CTo certify base maintenance inspections and major component overhauls
• DTo perform radio station tests and certify navigation equipment calibration

Under the Civil Aviation Regulations of Kenya, what is the role of an Approved Maintenance Organisation (AMO)?

• ATo design and manufacture new commercial transport aircraft
• BTo conduct aircraft operations, schedule flights, and train pilots
• CTo perform maintenance, repairs, modifications, and inspections on aircraft under an appr…
• DTo act as the national regulatory body that writes and enforces aviation laws

What is the primary alloying element in 2024 aluminum alloy, which is widely used in aircraft structural skins?

• ACopper
• BZinc
• CMagnesium
• DSilicon

What is the primary reason for cladding high-strength aluminum alloys (Alclad) used in aircraft skin construction?

• ATo increase the ultimate tensile strength of the sheet material
• BTo provide a highly polished decorative surface finish
• CTo protect the high-strength core material from corrosion by applying a layer of pure alu…
• DTo allow the alloy to be welded without reducing its heat-treated strength

Which of the following aluminum alloys has the highest tensile strength and uses zinc as its primary alloying element?

• A1100
• B2024
• C6061
• D7075

What does the letter 'T' followed by a number (e.g., T6) indicate in the designation of aluminum alloys?

• AThe tensile strength limit in thousands of pounds per square inch
• BThe thermal conductivity coefficient of the material
• CThe temper designation showing the specific heat-treatment or strain-hardening condition
• DThe thickness tolerance class of the sheet material

In the standard MS20470AD4-6 rivet code, what does the number '4' indicate?

• AThe length of the rivet in sixteenths of an inch (6/16 inch)
• BThe diameter of the rivet in thirty-seconds of an inch (4/32 inch)
• CThe thickness of the sheets to be joined by the rivet
• DThe alloy composition type of the rivet head

Which rivet head marking designates an 'AD' rivet made of 2117-T4 aluminum alloy, which can be driven in its received state without further heat treatment?

• AA plain flat head with no markings
• BA raised dash on the head
• CA small dimple in the center of the head
• DTwo raised dashes on opposite sides of the head

What type of corrosion is characterized by a sand-like or powdery white deposit on aluminum surfaces, resulting from galvanic action when dissimilar metals are in direct contact?

• AIntergranular corrosion
• BDissimilar metal (galvanic) corrosion
• CFretting corrosion
• DExfoliation corrosion

Fretting corrosion on aircraft structures, particularly around rivet holes, is easily identified on aluminum by which of the following surface indications?

• AA dry red rust trail streaming from the rivet
• BGreen copper carbonate deposits around the fastener head
• CA dark grey or black powdery trail (often called 'smoky' or 'rivet smoking')
• DFlaking or peeling of the anodized skin layer

Which of the following conditions is required for stress corrosion cracking (SCC) to develop in an aircraft component?

• AHigh temperatures combined with rapid cooling (thermal shock)
• BDirect contact with a strong acidic cleaning agent in a vacuum
• CThe simultaneous presence of a tensile stress and a corrosive environment
• DVibration under high compressive loads without oxygen

Which non-destructive testing (NDT) method is based on the principle of electromagnetic induction and is highly effective at detecting subsurface cracks in conductive materials like aluminum skin?

• AUltrasonic testing
• BMagnetic particle inspection
• CEddy current inspection
• DDye penetrant inspection

During a dye penetrant inspection, what is the purpose of applying the 'developer'?

• ATo chemically react with the metal to etch the crack boundaries
• BTo clean the excess dye from the surface of the metal prior to inspection
• CTo act as a blotter that draws the trapped penetrant out of the crack to make it visible
• DTo seal the crack and prevent the dye from evaporating under ultraviolet light

Why is titanium widely used in the construction of aircraft firewalls and turbine engine nacelles?

• AIt has low density and is easy to machine and form at room temperature
• BIt retains its strength at high temperatures and has excellent corrosion resistance
• CIt acts as an excellent electrical conductor for lightning strike protection
• DIt is cheaper and more abundant than aluminum or structural steels

In composite aircraft construction, what role does the 'matrix' (resin) perform?

• AIt carries the primary tensile loads applied to the structure
• BIt bonds the reinforcing fibers together and transfers loads between them
• CIt provides the electrical path for static discharge bonding
• DIt determines the directional alignment of the reinforcement

In the standard AN bolt designation 'AN4-12A', what does the number '12' represent?

• AThe bolt diameter in sixteenths of an inch (12/16 inch)
• BThe bolt length, coded as inches plus eighths of an inch (here 1 inch + 2 eighths = 1-1/4…
• CThe thread pitch classification (12 threads per inch)
• DThe grip length of the bolt in thirty-seconds of an inch

What is a critical limitation of fiber-type self-locking nuts (like Nylon-insert Elastic Stop Nuts) used on aircraft?

• AThey cannot be used in areas subject to fuel exposure
• BThey must never be used in areas subject to temperatures exceeding 250°F (121°C)
• CThey can only be used on non-structural, secondary aircraft fairings
• DThey must be discarded after a single use and never reinstalled

When using a standard micrometer caliper, what is the pitch of the spindle screw threads and the value of one full turn of the thimble?

• A0.025 inch
• B0.001 inch
• C0.050 inch
• D0.100 inch

If a torque wrench extension (adapter) is added to the drive end of a torque wrench, extending its length, what effect does this have on the torque value shown on the dial compared to the actual torque applied to the fastener?

• AThe torque shown on the dial will be lower than the actual torque applied
• BThe torque shown on the dial will be higher than the actual torque applied
• CThe torque shown on the dial will remain exactly equal to the actual torque applied
• DThe torque wrench will automatically self-calibrate and show the correct value

Which tool should be used to measure the thickness of a clearance gap, such as the spark plug electrode gap or a piston ring side clearance?

• AFeeler gauge (thickness gauge)
• BMicrometer depth gauge
• CDial indicator
• DVernier caliper

What is the standard rule for safety wire (lockwire) installation on aircraft fasteners?

• AThe wire must be installed so that it tends to tighten the bolt/nut if it tries to loosen
• BThe wire must be twisted tightly in a clockwise direction only, regardless of thread dire…
• CThe wire must have at least 15 to 20 twists per inch to ensure proper tension
• DThe wire must be routed through the center of the bolt shank and bent over the thread

How many twists per inch (TPI) should normally be present in a double-twist safety wire installation using standard 0.032-inch diameter wire?

• A6 to 10 twists per inch
• B3 to 5 twists per inch
• C12 to 15 twists per inch
• D18 to 22 twists per inch

When installing a cotter pin in a castellated nut on an aircraft bolt, what is the correct practice for bending the prongs?

• ABend one prong over the end of the bolt and the other down against the nut flat, ensuring…
• BTwist both prongs together around the bolt shank in a clockwise direction
• CCut both prongs flush with the castle slot and secure them with epoxy resin
• DBend both prongs sideways around the nut flats and wrap them with safety wire

What is the maximum number of exposed threads allowed on either side of an aircraft turnbuckle barrel after rigging is complete?

• AThree threads
• BNo threads (must be fully flush)
• CFive threads
• DTen threads

Prior to jacking an aircraft, what is a critical safety precaution that must be taken regarding the aircraft configuration?

• AThe aircraft must be loaded with maximum ballast weight in the cabin
• BAll landing gear shock struts must be fully deflated
• CThe aircraft weight and balance must be reviewed, and the aircraft must be leveled and st…
• DAll fuel tanks must be completely filled to capacity to stabilize the wings

What safety feature is built into standard aircraft tow bars to prevent damage to the aircraft nose landing gear during towing operations?

• AA shear pin designed to break under excessive torsional or towing loads
• BAn automatic hydraulic brake that locks the nose wheel if it turns too quickly
• CA flexible rubber coupler that absorbs all shock loads
• DAn electronic torque sensor that disengages the tow tug engine

Which class of fire involves combustible metals, such as magnesium wheels or titanium engine parts, and what extinguishing agent is appropriate?

• AClass D fire; Dry powder agent (such as copper-based powder or Met-L-X)
• BClass A fire; Water or aqueous film-forming foam (AFFF)
• CClass B fire; Carbon dioxide (CO2) or Halon 1211
• DClass C fire; Dry chemical or gaseous extinguishing agents

Why is the use of water highly dangerous when attempting to extinguish a Class B fire?

• AWater is an electrical conductor and poses a shock hazard to the operator
• BWater will cause the burning liquid to float and spread, expanding the fire area
• CWater reacts chemically with fuels to produce highly explosive hydrogen gas
• DWater is ineffective because it evaporates before reaching the fuel surface

What is a critical safety precaution when performing maintenance on an aircraft oxygen system or servicing oxygen cylinders?

• AEnsure all tools and hands are completely free of oil, grease, or hydrocarbon residues
• BKeep the components saturated with a light coating of mineral oil to prevent thread corro…
• CPurge the lines with highly concentrated hydrogen gas to remove moisture
• DUse only non-insulated steel tools to prevent static electricity build-up

How are aircraft fluid lines (rigid tubing and flexible hoses) marked to identify the type of fluid they carry?

• ABy colour-coded band tape containing specific geometric symbols and text labels (e.g., a…
• BBy painting the entire length of the tube or hose a solid color
• CBy stamping the fluid name directly into the metal wall at 1-foot intervals
• DBy using different thread styles (left-hand vs right-hand) for each fluid type

When installing a flexible aircraft hose, how can an engineer verify that the hose is not twisted in its installation?

• ABy checking that the colored layline printed along the length of the hose is straight and…
• BBy pressurizing the system and observing if the hose begins to rotate
• CBy measuring the outer diameter of the hose at both ends
• DBy checking that the hose has at least 15% slack along its run

What is the standard flare angle used on aviation rigid tubing and fittings, and how does it compare to automotive fittings?

• A37 degrees for aviation; 45 degrees for automotive (they must never be interchanged)
• B45 degrees for aviation; 37 degrees for automotive
• C90 degrees for aviation; 60 degrees for automotive
• DBoth systems use 37 degrees but have different thread pitches

When using a cable tensiometer to measure the tension of an aircraft flight control cable, what additional factor must be checked to determine the correct tension limit?

• AThe ambient air temperature (corrected using a temperature-tension chart)
• BThe age of the cable since its initial manufacture
• CThe humidity level inside the aircraft hangar
• DThe barometric pressure at the airport

Which of the following describes the correct inspection procedure for detecting broken wires in an aircraft control cable?

• ARun a clean, lint-free cloth or rag along the cable; if it snags, perform a detailed visu…
• BApply a high-voltage electrical current to the cable and measure electrical resistance
• CTap the cable with a small hammer and listen for changes in the acoustic pitch
• DMeasure the weight of a 10-foot section of the cable to check for metal loss

In which manual would an engineer look to find approved repair procedures for a damaged skin panel on an aircraft fuselage?

• AThe Structural Repair Manual (SRM)
• BThe Aircraft Maintenance Manual (AMM)
• CThe Illustrated Parts Catalog (IPC)
• DThe Minimum Equipment List (MEL)